Radiator construction



Feb. 26, 1929.

A. B. MODINE RADIATOR CONSTRUCTION I Filed Sept. 25, 1925 "whiz PatentedFeb. 26, 1929.

"UNITED STATES r 1,103,682 TENT OFFICE.

ARTHUR B. MODINE, F RACINE, WTSCOIN'SIN.

RADIATOR CONSTRUCTION. I

Application filed September 25, '1925. Serial No. 58,539.

My invention relates to radiators and particularly to radiators"suitable for use in automobiles, aeroplanes and the like. The inventionhas among its other objects the produc- 'tion of devices of the kindvdescribed which In the' drawings, wherein like reference.

' characters indicate like or corresponding parts; Figs. 1, 2 .and 3.arefragmentary views in elevation of a plate adapted to form parts of aradiator embodying the invention, the plate being shown in varlousstages-of manufacture;

Fig.

Fig. 5 is a fragmentary section" taken th-rough'a radiator embodying theinvention; Fig. 6 is a' section taken on line.66 of Fig.5;and

FFig. 7 is asection taken on line 77 of ig. 5. As illustrated in Figs.5, 6, and 7, a preferred form of the invention is embodied .in aradiator comprising a plurality of tubes 10 and plates 11, the tubes 10being passed through apertures 13 in the plates. The tubes 10 arepreferably formed from flat sheets of metala-nd are preferably ofelongated cross-section, the front and rear edges of the tubes beingrounded, the side edges of is a section taken on line H f the sheetsbeing brought together to form.

lap seams 10.- I

In Figs. 1, 2 and 3, I have illustrated a 5 method whereby I preferablyform the apertures 13 in the plates 11. Thus, in Fig. 1 I have shown theplate 11 provided with a plurality. of slits 15 extending transverselyof the plate, the slits 15 being punched or stamped in the late by anysuitable a pa- ;ratus (not shown After the slits have heen formed in theplate 11, those portions of. the

plates disposed intermediate thefslits are stamped or formed intoelongated arcuate bulges 17 which are Fig 6 and 7.

most clearly shown in 'No. 58,542, filed Septem from the spirit of Thisdraws the v1 5 into pointed ended slots 19 which are-illustrated in Fig.2. The ends of each slot 19 are then rounded, as illustrated in Fig.3,.to correspond to the rounded ends of the tubes 10, the material atthe ends of the slots 19 being upset to provide 'arcuate flanges 21adapted tocngage the tubes 10.

After the tubes 10 have been inserted in the apertures 13 .of the platesll they are preferably soldered to the plates by practising the improvedmethod more full described in my ,copendin application, erial er 25,1925. Briefly each plate 11 is preferably coated with any suitablesubstance to which solder does-not readily adhere. This may be donebefore or after the apertures 13 are formed in the plates, butpreferably before, so that the edges of the slots'13 and the innersurfaces of the 'arcuate flanges 21-will present clean surfaces to thetubes. ,If the coatings are applied to the plates after the slots 13 areformed therein, the edges of the-slots 13 and the. in-

ner surfaces of the arcuateflanges 21 may be cleaned by brushing them. Ater the tubes and then dipped a short distance into a'bath of fusedsolder, whereupon the solder rises along the tubes at those points wherethe plates 11 nor does it tend to spread itself over I those surfaces ofthe tubes disposed inter mediate the plates 11, except that the lapseams are soldered during one dipping operation.

Having thus described my invention, it 'is 18 held in substantiallyhorizontal position,-

plates will be properly a and plates have been assembled, the radiatorobvious that various immaterial modifications may be made in thesamewithout departing my invention; hence I do not wish to be understoodas limiting myself tothe exact form, construction, arrangement andcombination of parts herein shown and described or uses mentioned.-

What I claimas new anddesire to secure by Letters Patent .is:' e

A method cramm ng a radiat r com ri ing a plurality of plates andsubstantially the tubes by io rmingthe excess material into fiat sidedtubes passed through apertures in flanges at thecnds of the aperture andinto 10 said plates, which method comprises formbulges adjacent theaperture, and inserting ling a plurality of substantially straight slitssaid tubes through the apertures in the in the plates While they arefiat in such manplates. t ner that substantially all of the material isIn testimony whereof, I have hereunto left in the plates, .forming eachof said slits signed my. name.

7 into an aperture conforming to the shape of ARTHUR B. MODINE.

